IEEE Transactions on Circuits and Systems for Video Technology
The rhombic dodecahedron map: an efficient scheme for encoding panoramic video
IEEE Transactions on Multimedia
Panoramic video coding using affine motion compensated prediction
MCAM'07 Proceedings of the 2007 international conference on Multimedia content analysis and mining
Interactive panoramic video streaming system over restricted bandwidth network
Proceedings of the international conference on Multimedia
PanoWalk: a remote image-based rendering system for mobile devices
PCM'06 Proceedings of the 7th Pacific Rim conference on Advances in Multimedia Information Processing
Journal of Signal Processing Systems
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Panoramic videos are effective means for representing static or dynamic scenes along predefined paths. They allow users to change their viewpoints interactively at points in time or space defined by the paths. High-resolution panoramic videos, while desirable, consume a significant amount of storage and bandwidth for transmission. They also make real-time decoding computationally very intensive. This paper proposes efficient data compression and transmission techniques for panoramic videos. A high-performance MPEG-2-like compression algorithm, which takes into account the random access requirements and the redundancies of panoramic videos, is proposed. The transmission aspects of panoramic videos over cable networks, local area networks (LANs), and the Internet are also discussed. In particular, an efficient advanced delivery sharing scheme (ADSS) for reducing repeated transmission and retrieval of frequently requested video segments is introduced. This protocol was verified by constructing an experimental VOD system consisting of a video server and eight Pentium 4 computers. Using the synthetic panoramic video Village at a rate of 197 kb/s and 7 f/s, nearly two-thirds of the memory access and transmission bandwidth of the video server were saved under normal network traffic.